S tea ivi - ac t u ate d va l v e



(Nt lkl wodel Q 2 Sheets-Sheet 2. e, A. & E. BARTHOLOMEW. I

v STEAM AGTUATEDVALVE- m; 541 23 in Panem 0w.

R ING I. WASHINGYONv n. 15,

PLAT-E E OFFICE.

- GILBERT A. BART -IO'LoMEW, oF-MAUMnnANo nuns nAnTnoLoMnW, or LIMA, 01110.

"STEAM A'CT UATED VALVE.

GATIoN forming part ofLettersPatent No. 547,623, dated October 8, 1895. Application filed August 10, 1895 Serial No. 558,880. (No model.)

T aZZ whom it may concern;

Be it known that we, GILBERT A. BARTHOLO- MEW, residing at Maumee, in the county of Lucas, and ELLTS'BARTHOLOMEW, residing at Lima, in the county of Allen, Stateof Ohio,

citizens of the United States,1have'invented certain new and useful Improvements in Steam-Actuated Valvesgand we do hereby declare the following to-be a-full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to steam engine valves, and moreespecially to that class thereof which are steam-actuated; and the ObJGCli of the same is to produce certain improvements in such valves.

To this end the invention consists in a valve constructed substantially as hereinafter described, and as illustrated in the drawings, wherein- Figure .1 is a central longitudinal section of this device as constructed for connection with a water-pump, showing the slide-valve at the center; Fig. 2 is. an elevation of the left end .of the device. Fig. 3 is a section similar to Fig.- 1, showing thedevice as constructed for connection with an air-pump and with the slide-valves at the right end of its.

stroke. Fig. 4 is a section of the device in Fig. 3, taken on aline at right angles thereto. Fig. 5 is a detailin side elevation of the valve piston in oneof several shapes with its several heads, the left one thereof being partlyremoved. Fig. 6 is a horizontal section through Fig. 3 on the line of the bottom of the-slidevalve chamber and partly broken away to better show the ports.

' Referring to the said drawings, the numeral '1' designates the valvepiston cylinder, ha'vin g a steam-inlet 2, preferably at the top, assh'own in Fig. 1, although it may be at the side, as at 2" in, Figs. 3 and 4, and the ends of this cylinder are closed by heads 3, which screw thereinto, or by heads 3, connected therewith by bolts 3", as may be preferred.

-l is the main cylinder, mounted on a support 5 or sustained by a bracket 5, and 6 is 'the main piston, connected with a rod 7 and pump WV, as in Fig. 1, or an air-pump A, as in Figsr3 and 4, or to any other'suitable work which it is desired to perform.

9 is the exhaust-port, as will be understood. Within the cylinder 1 is located the valve piston (best seen in Fig. 5) and comprising a centrally-disposed stem 10, at opposite ends of which are supplementary heads 11 and 12,

beyond which are the main heads 13 14. In

this view the last-mentioned head is screwed on, as at 15,'and as the oth'cr' hcads are smaller toward the left the right cylinder-head can be removed and this piston inserted, after" which.

the left cylinder-head 3 is removed and the left piston-head 1% put on. However, we do not limit ourselves to this precise construction, as any suitable means may be employed for putting the piston in place. itwill be noticedthat in Fig. 1 the diameters of the piston-heads 11 and Mare equal, while 12 is smalle'r'and 13 is larger. In Fig. 5 the two main heads 13 1d are equal in size, while 11 is smaller and 12 is still smaller, and in Fig. 3

all the heads differ in size. Considerable latitude is permitted the builder in this direction,

so long as the right supplementary head 11 is larger than the left one 12, as will appear below.

1Gis what we will call-a piston-port, opening through the side of the supplementary head 11 and leading thence outward through the main head 13 to-the right end of cylinder Land 17 is a similar port located in the left heads of the valve-piston. I,

Within the cylinderis-also located the slidevalve 20, having in its lower face the cavity -21, which is always in communication with the exhaust 9, and at each side of the latter is a main port, numbered 22 and 23,1eading, re-

spectivcly, to the right and loft extremities of the main cylinder 4:, as seen in Fig. 1, or to the lower and upper extremities thereof, as in Fig. 3. In fact .thetwo constructions illustrated in these views'are practical duplicates of each other, except that the main cylinders are dillercntly located as to position, and we will not hereinafter refer to the slight resultant difference, the nu mboring being so l'licient to show the res 'icctive constructions of parts.

50 leading through suitable packingSto a water-5 diatom the outer extremities of the valve, eye.

inder two ports 2t and lead to the main cylinder near the corresponding ends of the latter, and these we will callthe connecting ports, as theyconnect the two cylinders. At each side of the chamber within which the slide-valve 20 moves is a partition 1' within thevalve-cylinder 1, having an aperture of a size to admit its supplementary head, and just outside these partitions arelthe valveports 26 and 27, communicating with thegmai n ports 22 23, respectively, as shown. The relative sizes of thesc ports are about as best seen in Fig. l, which also correctly shows the lead andlap. The parts standing as seen in Fig. 1, live steam enters at 2hetwcen the partitions l, and as thesupplementary head ll is larger than12- it moves the entire valve slightly to the 'righnthe exhaust being but slight and passing down through connecting- As the main piston 6 passes the connecting port 24, live steam is admittedoutside the valve-head 13 (the exhaust atthe' inside being through valve-port 26) with a. tendency to move the valve to the left, and thclive steam, pressing on the innerface of lefthead l2 and, through valve-port 27, on the inner face of head 1'4, will be equalized byfthe'ilive steam on the outer face of head 1.4:, ."which' flows thereto both through the piston-port 17' and in'ent also carries the slide-valve the main port 23,cylinder lfahdflonhech ing por The preponderance of pressure' at the right of tem-1s; will therefore move the valvetothe lcEtQand'asit moves piston-port" 1'7 is closedand, It) is "opened to assisttl1is-1n-ovement,as aliov Thisrnovev EZOIto theleft, and hence reverses. the how ot livesteamand the exhaust. In this] manner 'the valve will cause the main piston toflreciprocategwithin the cylinder 4, and any warrant is connected with the mainrod- 7 willhe performed. It will he obviousthat the main cylinder may be upright, horizontal, or-atv any desired angle to the valve-cylinder solong as the ports are led to proper points; in fact the two cylinders could be quite remote, if desired, or

, one valvecylindercould be connected with as a governoit.

A 1. In an engine, the combination.with the 7t main cylinder and piston, the inlet, exhaust,

and main ports, and the slide valve; of the valve piston cylinder having two partit ons with openings of dillcrent sizes, two heads moving in said openings and connected with each other, the slide valve being moved by those heads, and for each head a valve port and connecting port, as'and for the purpose set forth.

2. In an engine,'thecombination "with the main cylinder and. piston, the inlet, exhaust, and main ports, and lil0'.(3()lliil'0iiill; valve therefor; of the valve piston cylinder, two heads of dillcrent sizes moving therein, a piston port through each head from its outer face to a point in its side, a valve port connectingeach part of this cylinder with the space lie-'- tween the heads, and arod connecting said heads and by which the controlling valve is operated, and for the purpose set forth.

8. In an engine, the combination with the main cylinder and piston, the inlet, exhaust, and main ports therefor, and a controlling valve; of the valve piston cylinder having a supplementary piston head in each compartment, onc supplementary head being of smaller area than the other, a rod connecting said heads and by which the controlling valve is operated, and a valve port and connecting Icy,

port leading from the extremities of each compartment on opposite'sides of the main head therein to the chamber for the controlling;- valve, as and for the purpose set forth.

4-. Inan engine, the combination with the to main cylinder and piston, the valve piston cylinder having two end compartments of dil'tcrent'sizes and an-intcrpcse'd chaniher, the inlet and ontlet'ports opening intothis chamber, I and the two main ports leading from this chamber to the ends of the main cylinder; ot a slide valve in said chamber, two valve heads;

of different sizes moving respectively in said 9oi'npz'trt1nents,-a rod connecting the heads and by which the controlling valve is opcrr15 ing an intermediate chamber, said partitions 12 having openings o different sizes, the larger opening being adjacent the larger rampart ment, inlet and exhaust ports openina into said chamber, two main ports leading from compartment at each end, a piston head and the chamber to the ends ofv the main cylinder, 1

and a controlling valve within said chamber; of a valve head lit-ting each compartment, a

smaller supplementary valve head fitting each opening in the partitions, a rod connecting all said heads and by which the controlling valve is operated, and'ports leading from said chamber to each compartment and opening" thereinto on opposite sides of the main valve head therein, as and for the purpose set forth.

G. In an engine, the combination with the main eylimler,.the piston therein, the valve piston cylinder having two end compartments of different sizes and a chamber between them, the inletand exhaust ports opening into this chamber, and the two main ports leading from U)iS hELfl11be1' to-=the ends of the main cylinder; of a slide valve in said chamber, two valve heads of different sizes moving in said compartments and having supplementary heads at their inner sides,;a rod connecting the -'suppl-ementary heads and by which said slide valve is operated, a piston port openingfrom the rear of each valve head through the side of its supplementary head, and for each compartment a valve port anlha connecting port communicating with said chamber, as and-for the purpose set forth.

7. In an engine, the combination with the main cylinder, the piston therein, the valve piston cylinder having'two partitions with o 'ienings of different sizes and. an interposed said main port at that side of the chamber from opposite sides of the exhaust port to opposite ends of the main cylinder, and the slide valve for alternately connecting the mam ports with the exhaust; of two valve piston heads of different sizes in said compartments, two supplemei-itary heads also of different sizes connected with the main-heads and sliding in said openings, a rod connectingthe four heads and-by which said slide valve is operated, a piston port opening from the outer side of each main head through the side of its snmilementary head, a valve port con tecting, the inner end of each compartment with and a connecting port connecting the outer end of eachcompartment'witlithe main cyt inder at a point near its corresponding end but remote therefrom the thickness of the main piston, alias and for the purpose forth. 1 t

In testimony whereof we aliix our signm tures in presence of two Witnesses. Glillilrlltil A. BAH-l! VH1) M (4W EllLlh HAlt'lllOltWMW. Witnesses: I

L. M. Mnnrnr, N. .l, pllnnru v; 

